One of the qualities of human being is its capacity to be modified by its experience. The process is known as learning & conditioning. Most of the aspects of human sexual behavior appear to be the product pf learning and conditioning. As individual may prefer a particular type of individual as sexual partner-tall/short, younger/older single /variety of partners, heterosexual /homosexual ,petting/immediate coitus, single/variety of positions.

Flagellation Masochism, Transvestism and variety of fetishes appear to be the products of conditioning fortified by some other aspects of personality and by inherent capacities.

So called aberrant types of behavior meaning the less usual types of conditioned responses may be disadvantageous, but they are of social concern.  The classification of behavior as normal or abnormal represents moralistic Classification rather than any scientific one. Once known as perversion was later called as Deviation and now as variation.

Individuals become erotically aroused when they observe other individuals engaging in sexual activity. Most males are likely to respond quite immediately to such stimuli to come to erection and to seek the opportunity for sexual activity. These are Sympathetic Response. The restriction which the human societies place upon the public performances of sexual act arose from attempt to control the sympathetic response of the bystanders.

Males are more often conditioned by their sexual experience than females. There is tremendous variation in which different individuals may be affected by psychological stimuli females differ from average males. Females masturbate without associated sexual fantasies while all males do fantasize while masturbating. Females never had sexual drams while they slept while all the males have nocturnal sex dreams. Males are erotically aroused by seeing photographs or paintings of nudes are produced primarily for consumption of males. There are no male/female nude photographs or magazines produce for consumption of females. Heterosexual males are aroused by observing females breasts, genitalia or some other part of  the females body while most of the females are not aroused by observing male genitalia. Males are inclined to initiate a sexual relationship trough genital stimulation. Most females prefer to be stimulated tactilely in various other parts of the body before the activity is concentrated on the genitalia. It is complaint of married females that the husband is interested in nothing but intercourse. On the other hand it is a constant complaint of married male that his wife will do nothing to him which means that she does not tactilely stimulate his genitalia.

Many males have their sexual activities where there is some light. Male is stimulated by seeing genitalia or other parts of the body of sexual partner while females are much less attracted by observing the male partner genitalia. Females do not prefer light during their sexual activity.   

Many husband fail to comprehend that their wives may need general physical stimulation before they are sufficiently aroused and aroused and want a genital union.

Males are erotically stimulated by seeing pornographic literature or films, while females are not stimulated by the same. Females like to deal with general emotional situations affectional relationship and love.

Wall inscriptions in public toilet provide information on extent and nature of the suppressed sexual desires of males and females sexual material on the walls of male toilet are drawings slang words phrases or genitalia. In female toilet walls the inscriptions referred to love associated names lipstick impressions or drawings of hearts; but no genital action inscriptions are observed.

Many males marry so as to have an opportunity to have coitus regularly with their wife; while an average female marries to establish a home to establish a long term affect ional relationship with her spouse and to have children whose welfare becomes the prime business of her life.

Average male has a greater need than for females for regular and frequent sexual outlet.

It is difficult for the males to understand that females are not aroused by seeing male genitalia. Many males conclude that she is no longer in love with him. On the contrary many females feel that their husbands are vulgar or perverted because they want to display their genitalia. Difficulties develop in marital relationship because of this failure of females to understand male psychology, and of males to understand female psychology.